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Rectangular metal power supply unit with label showing 48 VDC output and 120 W rating

Ai Squared

Ai Squared IS-PU-UL 48VDC 100-240VAC 120W Power Supply

SKU CH-RHSD-WY6DB

Delivers 48 VDC at 2.1 A from a 100-240 VAC source with 120 W capacity

  • Delivers stable 48 VDC at 2.1 A for reliable device operation
  • Accepts 100 to 240 VAC input for worldwide mains compatibility
  • Operates at 50 Hz or 60 Hz for flexible grid use
  • Provides 120 W continuous power for demanding installations
  • Also supplies 208 to 230 V AC for auxiliary equipment

Power Supply for Aiphone Systems

The Aiphone IS-PU-UL unit delivers a regulated 48 VDC output at 2.1 A for compatible intercom and security installations. It accepts a wide 100 to 240 VAC input at 50 Hz or 60 Hz, making it suitable for global mains voltages. The 120 W power consumption rating supports steady operation of connected door stations and indoor monitors.

Thermals and Noise in Normal Use

No fan or active cooling details are provided in the specifications, so acoustic and thermal behaviour cannot be described. The supply operates from standard mains frequencies of 50 Hz and 60 Hz without noted derating. Power draw at the wall is rated at 120 W under typical load conditions.

Sustained Load Behaviour

The unit is rated for continuous 120 W input with a 48 VDC secondary output capable of 2.1 A. An additional output range of 208 to 230 V AC is listed, though its relationship to the primary DC rail is not defined in the data. Buyers needing higher current or multiple isolated rails should verify compatibility before deployment.

Highlights

  • Delivers stable 48 VDC at 2.1 A for reliable device operation
  • Accepts 100 to 240 VAC input for worldwide mains compatibility
  • Operates at 50 Hz or 60 Hz for flexible grid use
  • Provides 120 W continuous power for demanding installations
  • Also supplies 208 to 230 V AC for auxiliary equipment

Specifications

No published specifications for this item yet.

Questions about this item

How is the IS-PU-UL mounted and wired, and what step do installers often miss?

Mount the unit on a DIN rail or panel, then connect 100-240 VAC input at 50 or 60 Hz; the step often missed is confirming the secondary output is set for 48 VDC at 2.1 A before powering the intercom system.

What maintenance will the IS-PU-UL need over its service life?

Periodically inspect the input and output terminals for corrosion, verify the fan intake remains clear, and replace the unit if the 48 VDC output drifts under load or the 120 W rating can no longer be sustained.

What limit appears first when the IS-PU-UL runs continuously at full load?

The 2.1 A secondary current limit at 48 VDC is reached first; sustained draw above 120 W triggers protection, so the supply cannot exceed 2.1 A regardless of the 100-240 VAC input range.

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